static int
powermac_attach(platform_t plat)
{
phandle_t rootnode;
char model[32];
/*
* Quiesce Open Firmware on PowerMac11,2 and 12,1. It is
* necessary there to shut down a background thread doing fan
* management, and is harmful on other machines (it will make OF
* shut off power to various system components it had turned on).
*
* Note: we don't need to worry about which OF module we are
* using since this is called only from very early boot, within
* OF's boot context.
*/
rootnode = OF_finddevice("/");
if (OF_getprop(rootnode, "model", model, sizeof(model)) > 0) {
if (strcmp(model, "PowerMac11,2") == 0 ||
strcmp(model, "PowerMac12,1") == 0) {
ofw_quiesce();
}
}
return (0);
}
static int
chrp_attach(platform_t plat)
{
#ifdef __powerpc64__
/* XXX: check for /rtas/ibm,hypertas-functions? */
if (!(mfmsr() & PSL_HV)) {
struct mem_region *phys, *avail;
int nphys, navail;
mem_regions(&phys, &nphys, &avail, &navail);
realmaxaddr = phys[0].mr_size;
pmap_mmu_install("mmu_phyp", BUS_PROBE_SPECIFIC);
cpu_idle_hook = phyp_cpu_idle;
/* Set up important VPA fields */
bzero(splpar_vpa, sizeof(splpar_vpa));
splpar_vpa[4] = (uint8_t)((sizeof(splpar_vpa) >> 8) & 0xff);
splpar_vpa[5] = (uint8_t)(sizeof(splpar_vpa) & 0xff);
splpar_vpa[0xba] = 1; /* Maintain FPRs */
splpar_vpa[0xbb] = 1; /* Maintain PMCs */
splpar_vpa[0xfc] = 0xff; /* Maintain full SLB */
splpar_vpa[0xfd] = 0xff;
splpar_vpa[0xff] = 1; /* Maintain Altivec */
mb();
/* Set up hypervisor CPU stuff */
chrp_smp_ap_init(plat);
}
#endif
/* Some systems (e.g. QEMU) need Open Firmware to stand down */
ofw_quiesce();
return (0);
}
